/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.jetspeed.decoration.validators;

import java.net.MalformedURLException;

import javax.servlet.ServletContext;

import org.apache.jetspeed.decoration.ResourceValidator;
import org.springframework.web.context.ServletContextAware;

/**
 * This implementation uses <code>ServletContext.getResource()</code>
 * to verify the existence of a resource.
 * 
 * @author <href a="mailto:weaver@apache.org">Scott T. Weaver</a>
 *
 */
public class WebApplicationResourceValidator implements ResourceValidator, ServletContextAware
{
    private ServletContext servletContext;
    

    public boolean resourceExists(String path)
    {
        try
        {
            return servletContext.getResource(path) != null;
        }
        catch (MalformedURLException e)
        {
            IllegalArgumentException iae = new IllegalArgumentException(path+" is not a valid path.");
            iae.initCause(e);
            throw iae;            
        }
    }


    public void setServletContext(ServletContext servletContext)
    {
        this.servletContext = servletContext;
        
    }

}
